Yes we do have 2N+1, but we have some computer equipment out on the floor with their own ups inside the cabinet, even tho we supply protected power to them. These are small units about 3000VA that power only the individual cabinet. Its these individual cabinets we're having problems with.
I'm maintaining a data center here in Texas, we have a Liebert UPS (4 750KVA modules per UPS with redundancy). In talking with building engineers, Leibert Techs, other electricians, i have learned you are not supposed to install a UPS on a UPS. My question is why. The only answer i get is "you...
